//
//  VisitorLoginView.swift
//  sinaWeibo
//
//  Created by wan on 15/12/14.
//  Copyright © 2015年 wan. All rights reserved.
//

import UIKit

//定义协议
@objc protocol VisitorLoginViewDelegate: NSObjectProtocol{
    //声明协议方法
    //用户将要登录
   optional func userWillLogin()
    //用户将要注册
    func userWillRegister()
    
}

class VisitorLoginView: UIView {
    
    //声明代理  代理要使用  weak属性
    weak var visitorViewDelegate:VisitorLoginViewDelegate?
    
    
    //对外提供设置访客视图的方法
    func setupInfo(tipText: String,imageName:String?){
        tipLabel.text = tipText
        
        if let name = imageName {
            //不是首页
            circleView.image = UIImage(named: name)
            //隐藏大房子
            largeIcon.hidden = true
            //将circleView移动到最顶层
            bringSubviewToFront(circleView)
        }else{
            //开始做动画
            startAnimation()
        }
    }
    
    private func startAnimation(){
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        //设置动画的属性
        anim.repeatCount = MAXFLOAT
        anim.duration = 10
        anim.toValue = 2 * M_PI
        //当动画完毕或者页面失去活跃状态动画不移除图层
        anim.removedOnCompletion = false
        //添加动画
        circleView.layer.addAnimation(anim, forKey: nil)
    }
    override init(frame: CGRect) {
        //调用super.init
        super.init(frame: frame)
        setupUI()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    //设置所有的子视图
    private func setupUI(){
        addSubview(circleView)
        addSubview(backView)
        addSubview(largeIcon)
        addSubview(tipLabel)
        addSubview(registerBtn)
        addSubview(loginBtn)
        
        
        //使用自动布局
        //约束需要添加到父视图
        //在使用手码添加约束 需要屏蔽 frame布局
        //        largeIcon.translatesAutoresizingMaskIntoConstraints = false
        //        circleView.translatesAutoresizingMaskIntoConstraints = false
        for subview in subviews {
            subview.translatesAutoresizingMaskIntoConstraints = false
        }
        
        addConstraint( NSLayoutConstraint(item: largeIcon, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint( NSLayoutConstraint(item: largeIcon, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1, constant: -60))
        
        //添加圆圈的约束
        addConstraint( NSLayoutConstraint(item: circleView, attribute: .CenterX, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint( NSLayoutConstraint(item: circleView, attribute: .CenterY, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterY, multiplier: 1, constant: 0))
        
        //lebal
        addConstraint( NSLayoutConstraint(item: tipLabel, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint( NSLayoutConstraint(item: tipLabel, attribute: .Top, relatedBy: .Equal, toItem: circleView, attribute: .Bottom, multiplier: 1, constant: 16))
        addConstraint( NSLayoutConstraint(item: tipLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 230))
        addConstraint( NSLayoutConstraint(item: tipLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 40))
        
        //注册按钮
        addConstraint( NSLayoutConstraint(item: registerBtn, attribute: .Right, relatedBy: .Equal, toItem: tipLabel, attribute: .Right, multiplier: 1, constant: 0))
        addConstraint( NSLayoutConstraint(item: registerBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        addConstraint( NSLayoutConstraint(item: registerBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint( NSLayoutConstraint(item: registerBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        //登录按钮
        addConstraint( NSLayoutConstraint(item: loginBtn, attribute: .Left, relatedBy: .Equal, toItem: tipLabel, attribute: .Left, multiplier: 1, constant: 0))
        addConstraint( NSLayoutConstraint(item: loginBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        addConstraint( NSLayoutConstraint(item: loginBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint( NSLayoutConstraint(item: loginBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        //设置背景视图的约束  可视化的布局语言
        //OC 中可选项 一般使用按位 或枚举选项 swift中直接指定数组
        //metrics:约束数值字典  [String: 数值]
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[backView]-0-|", options: [], metrics: nil, views: ["backView": backView]))
        
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[backView]-(-35)-[regBtn]", options: [], metrics: nil, views: ["backView": backView,"regBtn":registerBtn]))
        
        
        //设置背景视图的颜色
        backgroundColor = UIColor(white: 0.93, alpha: 1)
        
        
        //添加点击事件
        registerBtn.addTarget(self, action: "registerBtnClick", forControlEvents: .TouchUpInside)
        loginBtn.addTarget(self, action: "loginBtnClick", forControlEvents: .TouchUpInside)
    }
    @objc private func registerBtnClick(){
        //代理调用协议方法  如果为 nil 就不会调用
        visitorViewDelegate?.userWillRegister()
    }
    @objc private func loginBtnClick(){
        //userWillLogin?  判断是否相应方法
        visitorViewDelegate?.userWillLogin?()
    }
    
    //懒加载所有的子视图
    private lazy var backView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    private lazy var largeIcon: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    private lazy var circleView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    private lazy var tipLabel: UILabel = {
        let l = UILabel()
        l.text = "关注一些人,嘿嘿嘿,你懂得,嘿嘿嘿!!!"
        l.textColor = UIColor.darkGrayColor()
        l.textAlignment = NSTextAlignment.Center
        l.font = UIFont.systemFontOfSize(14)
        l.numberOfLines = 0
        
        return l
        }()
    
    private lazy var registerBtn: UIButton = {
        
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState:UIControlState.Normal)
        btn.setTitle("注册", forState:UIControlState.Normal)
        btn.titleLabel?.font = UIFont.systemFontOfSize(15)
        btn.setTitleColor(thmemColor, forState: UIControlState.Normal)
        btn.sizeToFit()
        return btn
        }()
    private lazy var loginBtn: UIButton = {
        
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState:UIControlState.Normal)
        btn.setTitle("登录", forState:UIControlState.Normal)
        btn.titleLabel?.font = UIFont.systemFontOfSize(15)
        btn.setTitleColor(UIColor.darkGrayColor(), forState: UIControlState.Normal)
        btn.sizeToFit()
        return btn
        }()
}
